Demonstrate that 1==-1
- To: mathgroup at smc.vnet.net
- Subject: [mg23171] Demonstrate that 1==-1
- From: "Alberto Verga" <verga at marius.univ-mrs.fr>
- Date: Thu, 20 Apr 2000 23:48:43 -0400 (EDT)
- Organization: Universite de la Mediterranee Aix en Provence
- Sender: owner-wri-mathgroup at wolfram.com
Compute
Integrate[(1 + a/E^(I*u))/(-1 + a/E^(I*u)), {u, 0, 2*Pi}]
Mathematica gives -2Pi
Now multiply the numerator and the denominator by -1
Integrate[(-1 - a/E^(I*u))/(1 - a/E^(I*u)), {u, 0, 2*Pi}]
Mathematica gets 2*Pi
This is only possible if 1==-1
Is this another bug in Limit?
Alberto Verga
irphe - Marseille
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